Continous high-power turbine fracturing equipment

ABSTRACT

The present invention discloses a continuous high-power turbine fracturing equipment, including a turbine engine, a reduction gearbox, a drive shaft and a plunger pump, the turbine engine is arranged in the same straight line with the reduction gearbox, the reduction gearbox is connected to the plunger pump through the drive shaft, the angle of the drive shaft is between 2° and 4°. The beneficial effects are as follows: chassis T1 materials are selected to provide a stable working platform for the equipment; the turbine engine is arranged in the same straight line with the reduction gearbox, the drive shaft is disposed between the reduction gearbox and the plunger pump, and the angle of the drive shaft is between 2° and 4°, ensuring stable and efficient transmission of the turbine engine, thus reducing the incidence of failure; a lubrication system driven by an auxiliary power system ensures that the turbine engine, the reduction gearbox and the plunger pump all run under appropriate circumstances, and a dual lubrication system ensures that the plunger pump achieves a power operation continuously at 5000 HP or above; with all the above technical means, the requirements of continuous high-power operations for the fracturing equipment would finally be satisfied.

TECHNICAL FIELD

The present invention relates to the technical field of turbinefracturing, and specifically to a continuous high-power turbinefracturing equipment.

BACKGROUND

Traditional fracturing equipment used in oil and gas fields are mainlydiesel-driven fracturing equipment and electric-driven fracturingequipment. With the development of science and technology, turbineengines used in aviation have also been applied on fracturing equipment.As the current technologies on turbine engine applications andfracturing operation in oil and gas fields are not mature, it isdifficult to realize the stable output of turbine engines, and so farthe co-use of turbine engines and high-power plunger pumps is still ablank spot, resulting in low output power of the whole equipment, whichcannot meet the current requirements of continuously stable andhigh-power operations for well sites in oil and gas fields.

Therefore, a continuous high-power output turbine fracturing equipmentis urgently needed to satisfy the current demands of well sites in oiland gas fields.

SUMMARY

To overcome the deficiencies in the prior art, an objective of thepresent invention is to provide a continuous high-power turbinefracturing equipment, in which chassis T1 materials are selected toprovide a stable working platform for the equipment; a turbine engine isarranged in the same straight line with a reduction gearbox, a driveshaft is disposed between the reduction gearbox and the plunger pump,and the angle of the drive shaft is between 2° and 4′, ensuring stableand efficient transmission of the turbine engine, thus reducing theincidence of failure; a lubrication system is driven by an auxiliarypower system to ensure that the turbine engine, the reduction gearboxand the plunger pump all run under appropriate circumstances, and a duallubrication system ensures that the plunger pump achieves a poweroperation continuously at 5000 HP or above; with all the above technicalmeans, the requirements of continuous high-power operations for thefracturing equipment would finally be satisfied.

The objective of the present invention is achieved by the followingtechnical measures: a continuous high-power turbine fracturingequipment, including a turbine engine, a reduction gearbox, a driveshaft and a plunger pump, the turbine engine is arranged in the samestraight line with the reduction gearbox, the reduction gearbox isconnected to the plunger pump through the drive shaft, and the angle ofthe drive shaft is between 2° and 4°.

Further, the power of the plunger pump is 5000 HP or above.

Further, the plunger pump is a five-cylinder plunger pump.

Further, the continuous high-power turbine fracturing equipment includesa chassis, the turbine engine, the reduction gearbox, the drive shaftand the plunger pump are disposed on the chassis, and T1 high strengthstructure steel is employed as the material of the chassis.

Further, the number of axles of the chassis is 3 or above.

Further, the continuous high-power turbine fracturing equipment includesan auxiliary power system and a lubrication system. The auxiliary powersystem provides power to the lubrication system, the lubrication systemincludes a lubrication unit for the turbine engine, a lubrication unitfor the reduction gearbox and a lubrication unit for the plunger pump.The lubrication unit for the plunger pump includes a high pressurelubrication unit and a low pressure lubrication unit.

Further, the high pressure lubrication unit includes a high pressuremotor, a high pressure pump and a high pressure oil line. The highpressure motor drives the high pressure pump, which pumps high pressurelubricating oil into the high pressure oil line.

Further, the high pressure oil line is used for lubricating theconnecting rod bearing bushes and the crosshead hearing bushes in theplunger pump.

Further, the low pressure lubrication unit includes a low pressuremotor, a low pressure pump and a low pressure oil line. The low pressuremotor drives the low pressure pump, which pumps low pressure lubricatingoil into the low pressure oil line.

Further, the low pressure oil line is used for lubricating thecrankshaft bearings, the crosshead sliding rails, the reduction gearboxbearing and the reduction gearbox gear pair in the plunger pump.

Further, at an oil inlet of the low pressure oil line, independentlubricating oil lines are respectively arranged for the reductiongearbox bearing and the reduction gearbox gear pair.

Further, the auxiliary power system is a diesel engine, or a gasturbine, or an electromotor.

Further, the auxiliary power system is disposed on a gooseneck of thechassis.

Further, there is a torque limiter disposed on the reduction gearbox,ensuring the torque not too large to damage the turbine engine,

Further, the turbine engine employs 100% of natural gas or diesel asfuel.

Further, the continuous high-power turbine fracturing equipment includesan air intake system, which includes air intake filters and air intakepipings, the air intake filters are connected to the air inlet of theturbine engine through the air intake pipings.

Further, the air intake filters are in V-shaped structures.

Further, the continuous high-power turbine fracturing equipment includesan exhaust system, which is connected to the exhaust port of the turbineengine.

Further, there is a rain cap disposed at the exhaust end of the exhaustsystem, the rain cap is hinged to the exhaust end of the exhaust systemand the opening of the rain cap faces away from the turbine engine.

Further, there is an electric capstan disposed between the rain cap andthe exhaust end of the exhaust system to achieve the rotaryopening-closing of the raincap around the hinge point, with the rotationangle greater than 0° and less than 90°.

Further, the opening-closing angle of the rain cap is 85°.

Compared with the prior art, the present invention has the followingbeneficial effects: providing a continuous high-power turbine fracturingequipment, in which chassis T1 materials are selected to provide astable working platform for the equipment; the turbine engine isarranged in the same straight line with the reduction gearbox, the driveshaft is disposed between the reduction gearbox and the plunger pump,and the angle of the drive shaft is between 2° and 4°, ensuring stableand efficient transmission of the turbine engine, thus reducing theincidence of failure; a lubrication system is driven by an auxiliarypower system to ensure that the turbine engine, the reduction gearboxand the plunger pump all run under appropriate circumstances, and a duallubrication system ensures that the plunger pump achieves a poweroperation continuously at 5000 HP or above; with all the above technicalmeans, the requirements of continuous high-power operations for thefracturing equipment would finally be satisfied.

The present invention will be illustrated in detail below with referenceto accompanying drawings and the detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a continuous high-powerturbine fracturing equipment.

FIG. 2 is a schematic structural diagram of an exhaust system.

FIG. 3 is a schematic diagram of lubrication in the plunger pump.

Wherein, 1. chassis, 2. auxiliary power system, 3. the first hydraulicpump, 4. exhaust system, 5. air intake system, 6. turbine engine, 7.reduction gearbox, 8. drive shaft, 9. plunger pump, 10. air intakefilters, 11. rain cap, 12. electric capstan, 13. connecting rod bearingbushes, 14. crosshead bearing bushes, 15. crankshaft bearings, 16.crosshead upper sliding rails, 17. crosshead lower sliding rails, 18.reduction gearbox gear pair, 19. reduction gearbox bearing, 20. highpressure oil line, and 21. low pressure oil line.

DESCRIPTION OF THE EMBODIMENTS

As shown in FIGS. 1 to 3, a continuous high-power turbine fracturingequipment, including a turbine engine 6, a reduction gearbox 7, a driveshaft 8 and a plunger pump 9, the turbine engine 6 is arranged in thesame straight line with the reduction gearbox 7, the reduction gearbox 7is connected to the plunger pump 9 through the drive shaft 8, and theangle of the drive shaft 8 is between 2° and 4°, ensuring stable andefficient transmission of the turbine engine 6 thus reducing theincidence of failure.

The power of the plunger pump 9 is 5000 HP or above. The plunger pump 9is a five-cylinder plunger pump. The output of the high-power plungerpump 9 provides basic conditions for the continuous high-power turbinefracturing equipment.

The continuous high-power turbine fracturing equipment includes achassis 1, the turbine engine 6, the reduction gearbox 7, the driveshaft 8 and the plunger pump 9 are disposed on the chassis 1. T1 highstrength structure steel is employed as the material of the chassis 1,ensuring the stability of the chassis 1, providing a reliable workingplatform for the stable operations of the turbine engine 6 and thehigh-power plunger pump 9.

The number of axles of the chassis 1 is 3 or above, ensuring sufficientsupporting capacity.

The continuous high-power turbine fracturing equipment includes anauxiliary power system 2 and a lubrication system, the auxiliary powersystem 2 provides power to the lubrication system. The lubricationsystem includes three lubrication units, which are the lubrication unitfor the turbine engine, the lubrication unit for the reduction gearboxand the lubrication unit for the plunger pump, respectively. Thelubrication unit for the turbine engine is used for lubricating theturbine engine 6, the lubrication unit for the reduction gearbox is usedfor lubricating the reduction gearbox 7, and the lubrication unit forthe plunger pump includes a high pressure lubrication unit and a lowpressure lubrication unit. The function of the lubrication system is tolubricate and cool the turbine engine 6, the reduction gearbox 7, andthe plunger pump 9, thus ensuring their stable operations. Thelubrication system includes components such as a cooler, a firsthydraulic pump 3, a pressure gage, a safety valve, and so on. The coolercools the lubricating oil, ensuring the oil entering each lubricationunit at normal temperature to provide sufficient lubricating properties.The first hydraulic pump 3 provides power to each lubrication unit. Thepressure gage is used to monitor the pressure of the lubricating oil inthe whole lubrication system. The safety valve ensures stable operationsof the lubrication system.

The high pressure lubrication unit includes a high pressure motor, ahigh pressure pump and a high pressure oil line 20. The high pressuremotor drives the high pressure pump, which pumps high pressurelubricating oil into the high pressure oil line 20. The high pressureoil line 20 is used for lubricating the connecting rod bearing bushes 13and the crosshead bearing bushes 14 in the plunger pump 9. The lowpressure lubrication unit includes a low pressure motor, a low pressurepump and a low pressure oil line 21. The low pressure motor drives thelow pressure pump, which pumps low pressure lubricating oil into the lowpressure oil line 21. The low pressure oil line 21 is used forlubricating the crankshaft bearings 15, the crosshead sliding rails, thereduction gearbox bearing 19 and the reduction gearbox gear pair 18 inthe plunger pump 9. The crosshead sliding rails include crosshead uppersliding rails 16 and crosshead lower sliding rails 17. By providing oilfor lubrication with the dual lubricating oil line, differentlubrication demands at each lubricating point in the plunger pump 9would be satisfied; two oil pumps (a high pressure pump and a lowpressure pump) are employed to supply oil so that the oil supply of eachoil fine could be better guaranteed, thus better distributing thelubricating oil, and avoiding problems of uneven distribution oflubricating oil caused by excessive lubrication branches andinsufficient amount of lubricating oil at each lubricating point, thusenhancing the utilization of lubricating oil, reducing abnormalities,and better assisting the continuous stable operations of the high-powerplunger pump 9. For the connecting rod bearing bushes 13 and thecrosshead bearing bushes 14, the fit clearance is small, the carriedload is high, the contact area is large, and the requirements onlubrication are high. However, for the crankshaft bearings 15, thecrosshead sliding rails, the reduction gearbox bearing 19 and thereduction gearbox gear pair 18, by contrast, the requirements onlubrication are low.

At an oil inlet of the low pressure oil line 21, independent lubricatingoil lines are respectively arranged for the reduction gearbox bearing 19and the reduction gearbox gear pair 18. The rotation rates of thereduction gearbox bearing 19 and the reduction gearbox gear pair 18 arehigh, each of which is supplied with oil independently, which canguarantee sufficient lubricating oil for effectively establishing oilfilms, rapidly taking away the heat resulting from friction, andimproving the life time.

There are a filter, an overflow valve and the like disposed on therespective oil supply line of the high pressure oil line 20 and the lowpressure oil line 21. The rated lubricating oil pressure of the highpressure oil line 20 is 200-350 PSI. The rated lubricating oil pressureof the low pressure oil line 21 is 60-150 PSI.

The auxiliary power system 2 is a diesel engine, or a gas turbine, or anelectromotor.

The auxiliary power system 2 is disposed on a gooseneck of the chassis1, optimizing the configuration form of each component of the equipmenton the chassis 1.

There is a torque limiter disposed on the reduction gearbox 7, ensuringthe torque not too large to damage the turbine engine 6.

The turbine engine 6 employs 100% of natural gas or diesel as fuel.

The continuous high-power turbine fracturing equipment includes an airintake system 5, which includes air intake filters 10 and air intakepipings, the air intake filters 10 are connected to the air inlet of theturbine engine 6 through the air intake pipings. The air intake system 5is integrated on the same chassis 1, increasing the ease of use of thecontinuous high-power turbine fracturing equipment, reducing thetransportation cost, without the need of field connection and assembly.

A chamber is disposed outside the turbine engine 6, the air intakefilters 10 are disposed on the chamber, and the air intake filters 10are in V-shaped structures, which means that the cross sections of theair intake filters 10 are in V-shapes, which are different from theexisting planar structures in larger contact area, thus increasing theair intake area, decreasing the flow rate of the air inflow, extendingthe life time of the air intake filters 10, better matching the desiredair amount of the turbine engine 6, and promoting the stable output ofthe turbine engine 6.

The continuous high-power turbine fracturing equipment includes anexhaust system 4, which is connected to the exhaust port of the turbineengine 6. The exhaust system 4 is integrated on the same chassis 1,increasing the ease of use of the continuous high-power turbinefracturing equipment, reducing the transportation cost, without the needof field connection and assembly.

The exhaust end of the exhaust system 4 is provided with a rain cap 11,the rain cap is hinged to the exhaust end of the exhaust system 4 andthe opening of the rain cap faces away from the turbine engine 6. Theexhaust end of the exhaust system 4 is in a type of opening, if itrains, the rainwater would accumulate in the exhaust system 4, moreseriously flow backward into and damage the turbine engine 6. Theaddition of rain cap 11 can effectively avoid this. Moreover, theopening of rain cap 11 faces away from the turbine engine 6, thuspreventing the discharged exhaust from being inhaled by the air intakesystem 5 of the turbine engine 6.

The rain cap 11 is hinged to the exhaust end of the exhaust system 4through an electric capstan 12 to achieve the rotary opening-closing ofthe rain cap 11 around the hinge point, with the rotation angle greaterthan 0° and less than 90°. The opening-closing angle of the rain cap 11is 85°. The rain cap 11 can be completely closed in non-working state oron rainy days, that is 0° status; and can be opened in working state,preferably open up to 85°, ensuring that the rain cap 11 can be openedand closed smoothly by the electric capstan 12.

It will be appreciated to persons skilled in the art that the presentinvention is not limited to the foregoing embodiments, which togetherwith the context described in the specification are only used toillustrate the principle of the present invention. Various changes andimprovements may be made to the present invention without departing fromthe spirit and scope of the present invention. All these changes andimprovements shall fail within the protection scope of the presentinvention. The protection scope of the present invention is defined bythe appended claims and equivalents thereof.

1. (canceled)
 2. (canceled)
 3. A turbine fracturing equipment,comprising a lubrication system, which comprises a first lubricationunit configured to lubricate a plunger pump; the first lubrication unitcomprising a low pressure lubrication unit; wherein the low pressurelubrication unit comprises a low pressure motor, a low pressure pump,and a low pressure oil line, the low pressure motor is configured todrive the low pressure pump, which is configured to pump low pressurelubricating oil into the low pressure oil line; the low pressure oilline is configured to lubricate at least one of crankshaft bearing,crosshead sliding rails, bearings and gears of a reduction gearbox inthe plunger pump, and at an oil inlet of the low pressure oil line,independent lubricating oil lines are respectively arranged for thebearings of the reduction gearbox and the gears of the reduction gearboxin the plunger pump.
 4. The turbine fracturing equipment of claim 3,wherein the first lubrication unit further comprises a high pressurelubrication unit, the high pressure lubrication unit comprises a highpressure motor, a high pressure pump, and a high pressure oil line, thehigh pressure motor is configured to drive the high pressure pump, whichis configured to pump high pressure lubricating oil into the highpressure oil line.
 5. The turbine fracturing equipment of claim 4,wherein the high pressure oil line is configured to lubricate at leastone of connecting rod bearing bushes and crosshead bearing bushes in theplunger pump.
 6. The turbine fracturing equipment of claim 3, whereinthe lubrication system further comprises a second lubrication unitconfigured to lubricate a turbine engine.
 7. The turbine fracturingequipment of claim 6, wherein the lubrication system further comprises athird lubrication unit configured to lubricate an external reductiongearbox.
 8. The turbine fracturing equipment of claim 7, furthercomprising an auxiliary power system, wherein the auxiliary power systemis configured to provide power to the lubrication system.
 9. The turbinefracturing equipment of claim 8, wherein the auxiliary power system is adiesel engine, a gas turbine, or an electromotor.
 10. The turbinefracturing equipment of claim 8, further comprising a chassis, whereinthe turbine engine, the external reduction gearbox, and the plunger pumpare disposed on the chassis, and the chassis is made of materialcomprising T1 high strength structure steel.
 11. The turbine fracturingequipment of claim 10, wherein the auxiliary power system is disposed ona gooseneck of the chassis.
 12. The turbine fracturing equipment ofclaim 10, further comprising a transmission shaft between the externalreduction gearbox and the plunger pump, wherein the turbine engine isarranged coaxially with the external reduction gearbox around a commonstraight axis; and an angle between the transmission shaft and thecommon straight axis is between 2° and 4°, inclusive.
 13. The turbinefracturing equipment of claim 10, wherein a power of the plunger pump isabout 5000 HP. 14 The turbine fracturing equipment of claim 13, theplunger pump is a five-cylinder plunger pump.
 15. The turbine fracturingequipment of claim 10, wherein the turbine engine employs 100% ofnatural gas or diesel as fuel.
 16. The turbine fracturing equipment ofclaim 10, further comprising an air intake system, which comprises airintake filters and air intake pipes, wherein the air intake filters areconnected to air inlets of the turbine engine through the air intakepipes.
 17. The turbine fracturing equipment of claim 16, wherein the airintake filters are in V-shaped structures.
 18. The turbine fracturingequipment of claim 10, further comprising an exhaust system, which isconnected to an exhaust port of the turbine engine, wherein an exhaustend of the exhaust system is provided with a rain cap, the rain cap isconfigured to be hinged to the exhaust end of the exhaust system andopened in a direction away from the turbine engine.
 19. The turbinefracturing equipment of claim 18, wherein the rain cap is configured torotate along the exhaust end of the exhaust system with a rotation anglebetween 0° and 90° after obtaining power provided by an electriccapstan.
 20. The turbine fracturing equipment of claim 19, wherein therotation angle is 85°.
 21. The turbine fracturing equipment of claim 3,wherein the lubrication system comprises a cooler, a first hydraulicpump, a pressure gage, and a safety valve.
 22. The turbine fracturingequipment of claim 3, wherein the crosshead sliding rails comprisecrosshead upper sliding rails and crosshead lower sliding rails.